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Page 13 <br /> X. AIR MONITORING <br /> A. KNOWN CONTAMINANTS- When air monitoring in the breathing zone(for a one minute <br /> duration)detects concentrations at the action level(s), mtmduce the appropriate action. <br /> 1. Gasses and Vapors <br /> Action Level <br /> Instrument Calibration Frequency/ Above <br /> and date of Gas Duration of Air Background <br /> Calibration Standard Monitoring (Breathing Zone) Action <br /> OVM(PID) 100 ppm Every 30 minutes Introduce engineering <br /> Isobutylene or sooner if controls i e blower fans <br /> RF = 0 70 odors detected 5 ppm vel D <br /> 100 22M Don respirator vel <br /> 500ppm Leave area vel C <br /> NE Upgrade to Level B <br /> 2. plosion Hazard <br /> Action Level Above <br /> Instrument and Date Background Frequenc /Duration <br /> of Calibration Ambient Air of Air Monitoring Action <br /> Combustible gas indicator Greater than 20% LEL Leave Area <br /> NE=NOT EXPECTED <br /> Parker Environmental Services, 190 East 7th Street, Pittsburg, CA 94565-2317 <br /> Phone (510) 439-1024 Fax (510) 439-2566 <br />